WebSphere® Application Server Version 8 is installed using IBM® Installation Manager. This article outlines the issues that you should consider in planning your product installation.
IBM Installation Manager is a general-purpose software installation and update tool that runs on a range of computer systems. On z/OS systems, Installation Manager can be invoked through a command-line interface, console mode, or response files.
For more information on using Installation Manager, read the IBM Installation Manager Version 1.4 Information Center or the IBM Installation Manager Version 1.5 Information Center.
Each software product that can be installed with Installation Manager is referred to as a "package." An installed package has a product level and an installation location. A package group consists of all of the products that are installed at a single location.
To manage multiple copies of a software product—a test copy and a production copy for example—you install the product several times and into separate package groups, each with a distinct installation location. The different copies of the product can be maintained or upgraded separately.
You only need to run Installation Manager on those systems on which you install or update product code. You normally need only one Installation Manager on a system because one Installation Manager can keep track of any number of product installations.
IBM Installation Manager comes in the form of an installation kit, which contains a set of Installation Manager binaries and a repository for the Installation Manager product. On z/OS, the Installation Manager installation kit normally resides at /usr/lpp/InstallationManager/V1R4. A copy of the Installation Manager installation kit is provided in SMP/E format with the WebSphere Application Server Version 8 product.
The installation kit is only used for setup and maintenance of the Installation Manager.
When the installation kit is available on your z/OS system, you can create an Installation Manager. An Installation Manager consists of a set of binaries that are copied from the installation kit and a set of runtime data that describe the products that have been installed by this particular Installation Manager.
Before creating an Installation Manager, you must decide in which mode the Installation Manager will run as well as where the binaries and runtime data—called "agent data" or "appdata"—will reside. Then, you issue the Installation Manager installation command from the appropriate user ID to create the Installation Manager.
All software materials that will be installed with IBM Installation Manager are stored in repositories. Each repository contains program objects and metadata for one or more packages—that is, software products at a particular level. Repositories can also contain product maintenance, such as fix packs and interim fixes.
The initial product repository for WebSphere Application Server Version 8 for z/OS is installed on your system with SMP/E. This SMP/E-installed repository will be updated over time to include regular product service in the form of fix packs.
You can also have Installation Manager download product fix packs and interim fixes from an IBM service website. Note that interim fixes will be available only through the service website or from the IBM Support Center.
Whenever you install a new product, you can choose from any of the available product levels in any accessible repository.
After you have created an Installation Manager and have access to all necessary product repositories, you can use Installation Manager command-line commands, console mode, or response files to perform the actual product installations. When you install a product, you provide the package name, optionally the product level to be installed, the product location, and any other optional properties. For example, some products have optional features that you can select at installation time or a list of optional supported language packs from which you can select.
Each copy of a product must be installed at a separate installation location (file system path). Certain products might be intended to be installed together into a common location.
Choosing installation locations is a critical part of product planning. These installation locations will normally be distinct from the locations at which the products are mounted when actually in use.
Refer to the IBM Installation Manager for z/OS V1.4 Program Directory (GI11-9852) and the Program Directory for WebSphere Application Server for z/OS V8.0.0 (GI11-9850) on the WebSphere Application Server library web page for more details.
You can use Installation Manager commands to list installed products and product levels. You can also obtain this information for installed copies of WebSphere Application Server Version 8 products by issuing the versionInfo.sh command from the product file system.
After products are installed, you can unmount them from the locations at which they are known to Installation Manager and remount them at other production locations or you can copy them to other computer systems. If you copy the Installation Manager binaries and runtime data along with the product file system, you can apply maintenance to the installed products on any computer system that has access to the product and service repositories.
You can use Installation Manager commands, console mode, or response files to install a new product level, roll back to a previous level, or modify the product by adding or removing optional features or language packs.